Phonograph-reproducer.



A. F. GALL. PHONOGRAPH REPRODUGER.

APPLICATION FILED SEPT. 11, 1909.

1 9973972. Patented May 26, 1914.

90 iii 257%? fi W W ture is circular, and of a diameter very. slightlygreater than that of the pin 10 I TENT ADOLPH F. GALL, OF WEST ORANGE,NE'W JERSEY, ASSIGNOR TO NEVJ JERSEY PATENT COMPANY, OF WEST ORANGE,NE'W JERSEY, A CORPORATION OF NEW JERSEY.

To all whom it may concern:

Be it known that I, Anonrrr F. GALL, a citizen of the United States, anda resident of West Orange, in the county of Essex and State of NewJersey, have made certain new and useful Improvements in Phonograph-Reproducers, of which the following is 'a de- Scription.

My invention relates to phonograph reproducers of the Edison type inwhich a floating weight is pivoted to the body of the reproducer, andthe stylus is carried by. a lever pivoted to the floating weight, andconnected to a reproducer diaphragm or other means for producing soundvibrations.

My invention has for its object the mounting of the said lever in such away that. the stylus shall be free to move up and down and alsohorizontally or laterally, butwhich mounting will not permit the styluslever to move longitudinally or to turn about a longitudinal axis,whereby the stylus responds very readily to irregularities in the recordgroove, is adapted to track a. record groove having a pitch as small asone two-hundredth of an inch or less, and produces at all times a loudand clear reproduction.

Reference is hereby made to the accompanying drawing of which- Figure 1is a central vertical section of a phonograph reproducer constructed inaccordance with my invention; Fig. 2 is a section on line 22 of Fig. 1;Figs. 3-, 4t and 5 aresimilar views of modifications, and Fig. 6 is asection on line 66 of Fig. 5.

' The reproducer shown comprises the'usual body 1, within which thediaphragm 2 is clamped between gaskets 3 by means of the usual clampingnut 4. The floating weight 5 is pivoted at 6 to a block 7 having a shank8 threaded within the body 1. The floating weight is provided with apair of depending lugs 9-within one of which is threaded a horizontalheaded pin or screw 10. Upon the latter is pivoted the stylus lever 11,one end of which is provided with a socket 12 within which is fixed astylus 13 in proper position to engage the groove of the sound record.The pivot portion-of the lever is of enlarged cross section andisapextured as shown at 14: to receive the pin 10. This aperwhereby anyappreciable longitudinal movement of the lever is prevented. The ma-'Specification of Letters Patent.

Application filed September 11, 1909.

Patented May 26, 1914.

Serial No. 517,336.

said slots is substantially the same as the so diameter of that portionof the pin 10 which passes through the aperture 14. p

The structure of Fig. 3 is similar to that of F1gs. 1 and 2, butdi'liers therefrom in that the" lever 11 is not provided with any 55aperture at its pivot portion and there are a pair of pins or screws 1Osituated opposite and in alinement with each other, the lever beingformed with slots 15 the height of which is substantially the same asthe di ameter of the pins 10", longitudinal move ment of the lever beingprevented by reason of theengageinent of the ends of the pins 10* withthe inner surfaces of the slots 15.

Fig. i differs from Fig. 3 in that the ends of the pins 10 do not engagethe body of the lever 11. In this structure the pivot portion of theleveivis spherical and engages spherical recesses 17 formed in the lugs9".

The ins 10 are threaded in lug's 9 and engage in slots in the'pivotportion of the lever, similar to slots 15 shown in Fig. 3.

In the structure of Figs. 5 and 6, the lever 11 is provided with atransverse pin 18 rigid therewith and which engages slots 19 8 formed inthe lugs 9, longitudinal move ment of the lever being prevented byreason of the engagement of the ends of the pin 13 with the lnner'wallsof said slots.

Having now described my invention, what Iclaim1s: I

1. In a phonograph reproducer, the combination of a body, a floatingweight carried thereby, a horizontal pin carried by the floating weightin fixed relation thereto, and

a stylus lever rotatable about said pin in two planes to permit thestylus to have up and down and lateral movement, said stylus lever beingprovided with means adapted to coact with said pin for restraining saidlever against movement longitudipally thereof andv against turning on alongitudinal axis, substantially as set forth.

2. In a phonograph reproducer, the combination of a body, a floatingweight carried thereby, a horizontal pin carried by the floating weight,a stylus lever having a horizontal opening through which the pin passes"and ofsubstantially the same diameter as the pin, in a plane midwaybetween the two side surfaces, at which point the opening is circular incross section, the opening being widened at each side of this point toform slots having horizontal bearing surfaces above and below the pin,substantially as set forth.

3. In a phonograph reproducer, the combination of a body, a diaphragmtherein, afloating weight carried by said body, a horizontal pin carriedby said Weight, and a stylus lever p votally mounted upon said pin andconnected to said diaphragm, said lever having a horizontal openingtherethrough through which the pin passes, a portion of said opening ofsubstantial length being of substantially the same height throughout asthe diameter of the pin, said opening having a circular cross section ina plane midway between the two side surfaces of the lever, the openingextending to each side of said plane as a horizontal V- shaped slothaving its apex in said plane, substantially as set forth.

4. In a phonograph reproducer, a stylus lever having a taperedhorizontal slot formed therein and a horizontally arranged circularopening communicating with said slot and adapted to receive a pivot pin,a portion of said slot of substantial length being of substantially the'same height throughout as the diameter of said pivot pin, substantiallyas set forth.

5. In a phonograph reproducer, a stylus lever having horizontal V-shapedslots on each side thereof with their apices inwardly directed and anopening connecting said slots situated at the apices thereof, said slotsand opening being adapted to receive a pivot in and being ofsubstantially the same height throughout as the diameter of said pivotpin, substantially as set forth.

6. In a phonograph reproducer, the combination of a body, a floatingweight carried thereby, a stylus, a stylus lever and a pivotal mountingtherefor which comprises a pin and slot connection, said pin beingrigidly mounted on said weight and forming a sup port for said lever,and said slot being so formed as to permit up and down and lateralmovement of thestylus, but to restrain said lever against movement in adirection longitudinally thereof and against turning on a longitudinalaxis, substantially as set forth.

7. In a phonograph rcproducer, the combination of a body, a floatingweight carried thereby, a stylus, a stylus lever, and a mountingproviding for movement of the stylus lover with respect to the floatingweight, said mounting comprising a pin and slot connection, said pinforming a support for said lever and said slot being so shaped as topermit up and down and lateral movement of the stylus but to restrainsaid lever against movement. in a direction longitudinally thereof andagainst turning on a longitudinal axis, substantially as described.

8.- In a phonograph reproducer, a stylus lever provided with ahorizontal opening adapted to receive a pivot pin, said opening H beingso formed as to permit up and down and lateral movement of the stylusbut to coact with. said pivot pin to restrain said lever againstmovement in a direction longitudinally thereof and against turning on alongitudinal axis, substantially as described This specification signedand witnessed this 7th day of September, 1909.

ADOLIH F. GALL. Witnesses DELOS HOLDEN, JOHN M. Caxrmnn.

Copies of this patent may be obtained for live cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

